Door control



March 5, 1929. c. A. HENNICKE DOOR CONTROL Filed June 16, 1925 Patented Mar. 5, 1929.

* UNITED STATES: PATENT ,orng

cHARLEsA. HENNICKE, oF'B FFA o, NEW YORK, AssI NoR' 'ro' THE EBERHARD MANUFACTURING 00., on OLEVELANDQOHIQA oonronn'rio -or 'oHIo.

- noon icoNirnon.

Application. filed June 16,1925: Serial-i110. 37,593.

' v The present invention relates to door operating means, and moreparticularly to means for openingandclosing the doors of vehicle bodies, such as those of the payasyou enter type of busses, I a p I I V have provided a door operating mechanism certain of the principal operating parts of which are adapted to be concealed under the upper surface of the fioor of the body. and operativelyv connectedto the door either at a point adj acent where it touches the fioorof thebody when the door is closed, or atapolnt higher upon the door by employing secondary post, thereby leaving the front of the 7 body free of rodsfand other-devices that would obstruct the working of gear shift; and other levers used in connection with the operation of the vehicle.

- ,The invention is illustrated in the accompanying drawings, where1n:r

Figure 17s a VlBW'ShOWIIIg touches the floor of thebody;

Figure 2 is a detail sectional view- 0f the door showing certain of; thej working .parts of the control mechanism, and I Figure 3 is a view illustrating the use of the secondary operating post.

Referring to the construction shown 1n Figures 1 and 2, 2 designates a vertical operating post having its upper end journaled 1n a bracket 3 attached to the vehicle body, and having-its lower end journaled in a plate 4 adapted to be secured to the body beneath the floor, the floor level being designated in Figure 1 by the chain lines 5. Thepost 2 has an operating handle 6 connected to its upper end and an arm 7 connected to itslower end. i

The door 8, which is'hinged'at 9 to swing outwardly, has a latch bolt 10 adapted toengage a suitable keeper on the vehicle body. A vertical latch bolt operating bar 11 is fitted in a clevis 12 attached to the door and having a spring 13 adapted to exert pressure on the the parts which are concealed under the floor connected'to the and is connected at oneend to the'arm 7 and at its, other end to the lever 15. -This connecting rod has a turn buckle 18 whereby the length ofrthe rod. can be adjusted. The lever A A 1 15 ispivo tedat its other-endto a levjer 19,

Theleverl19 is formedat its outerend with a T-,head'20,- The neck of the T-headengages face of the door. Theinner end of the slide rod 14 is normally maintained in engagement in a slot 21in a plate 22securecl to the inner I tion, :VVhen the beveled end of the latch bolt 10 engages its keeper as the door closes, thereby forcing the bolt inwardly, the innerend of theslide rod 14 will move away from theT- head 2050f the lever 19. This construction therefore (permits the I latch bolt to, operate independently of the .control .;mechani sm', therebyavoiding undue strain on the doors a loclc'when the door. is closed;

In opening the door the operating handle 6 is movedfromthe dotted line position to the full line position. -The initial movement of the operating mechanism causes the T- head 20 to force the sliderod 14 to the right, p V 7 thereby compressing the spring '23 and swinging the latch bar 11 about its pivot to withdraw the latch bolt from its keeper. Further movement of the operating handle 6 then moves the doorto the openposition.

\ In the modified construction shownin Figure 3 the inner end of the connecting rod 17 is connected to an arm 24 carried at the lower 7 end of a secondary opera-ting post 25'. a This operating post is journaled at its lower end in a plate26 secured beneath the floor, and at its upper end in a bracket 27 secured to-the vehicle body. An arm 28 is carried by the upper end of the post 25 and is pivoted to.the

lever 19 which has a T-head on its outer end operating in a slot 21 in a door plate 2 2f.

The T-head of this lever bears against the v V inner end of a slide rod 14? which has its outer I o 105 i i' a-latch operatingbar 11 The b-arll ispiv- 1 endpivotally connected to the upper end of oted in a clevis 12 and-has its lower end con-I nected to the inner end of the latch bolt 10*.

A Spring bears against the Upper end of 1 the bar 11 and normally maintains'the inner r It Will'be noted that in either form of the invention illustrated the principal operating 1o parts carried by the door are adapted to be end of the slide bar 14* in engagement with the T-head on the outer end of the lever 19*.

The arrangement shown in F igure3 isparticularly desirable foroperating large andheavy doorsas it avoids the heavy strain or.

twist caused by'operating the door from the bottom.

rod for operating the lever, and a horizontal movable operating lever for opening and 010's:

' ing the door having one end thereof sli'dably conne'etedv'ith' the door, *said'pu'sh rod terminating adjacent the slidabl'e' endof' the le= ver ivhereb'y the push rod is operated by movement of the operating lever in "one direction. I

' The combination with the'bodyand door of a vehicle'yot a door latch onthe door, a

lever on the door for moving the latch, ja

reciprocable push rod for operating 1the1e ver, a horlzontalnrovableoperating lever for opening and closing the doonhaving. one end thereof slidably received in a slot in the door and h-aving'a terminal portion for slidably connecti-ngthe lever with the door, said push rod terminating adjacent tosaid terminal portionv of the operating lever in the path of -IIIOVII16I1t thereof, and means for urging the push rod into-engagement with said teran mal portion; r

3. The combination with a vehicle body,

and door, of a vertically rotatable shaft having anoperating handle at its'top and'a lever at its bottom, a second lever pivotal-1y mounted. on the body adjacent thexdoor, an

adjustable connecting rod having one end secured to the leverandhavingits other end secured to said second lever, and'a link pivoted to said second lever havin'gone end-thereof operatively connected with the door through a lost motion connection. f

4; The combination with a vehicle body and door, of a vertically rotatable shaft having an operating handle at its top and a lever at its bottom, a second lever 'piv'otally carried on the body adjacent the door; an

adjustable connecting rod having one endsecfured to the lever and having its other end secured to said second leve'r,-a link pivoted tosaid second lever havinga;te1-minal,'and a slotted door plate on the'door, said ,ter

minal of the'link engaging the slot in said plate whereby it has a limitedsliding mov intent with respect to the d g p In testimony whereof I have hereunto set myh'a-nd. r I a CHARLES QAJHEDINICIiEL v 

